25420500502452 has 108 divisors (see below), whose sum is σ = 70686573002500. Its totient is φ = 7697012843520.

The previous prime is 25420500502429. The next prime is 25420500502459.

25420500502452 is a `hidden beast` number, since 2 + 54 + 2 + 0 + 50 + 0 + 502 + 4 + 52 = 666.

25420500502452 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 9001764086436 + 16418736416016 = 3000294^2 + 4052004^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420500502459) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3104478 + ... + 7776810.

Almost surely, 2^{25420500502452} is an apocalyptic number.

25420500502452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25420500502452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35343286501250).

25420500502452 is an abundant number, since it is smaller than the sum of its proper divisors (45266072500048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25420500502452 is a wasteful number, since it uses less digits than its factorization.

25420500502452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673614 (or 4673598 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

It can be divided in two parts, 25420500 and 502452, that added together give a palindrome (25922952).

The spelling of 25420500502452 in words is "twenty-five trillion, four hundred twenty billion, five hundred million, five hundred two thousand, four hundred fifty-two".