25452770040 has 192 divisors, whose sum is σ = 84294756000. Its totient is φ = 6659460096.

The previous prime is 25452770023. The next prime is 25452770051. The reversal of 25452770040 is 4007725452.

It is a happy number.

25452770040 is a `hidden beast` number, since 2 + 545 + 2 + 7 + 70 + 0 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 25452769977 and 25452770004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4449262 + ... + 4454978.

Almost surely, 2^25452770040 is an apocalyptic number.

25452770040 is a gapful number since it is divisible by the number (20) 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 25452770040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42147378000).

25452770040 is an abundant number, since it is smaller than the sum of its proper divisors (58841985960).

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

25452770040 is a wasteful number, since it uses less digits than its factorization.

25452770040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966 (or 5959 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The spelling of 25452770040 in words is "twenty-five billion, four hundred fifty-two million, seven hundred seventy thousand, forty".