25615622651652 has 192 divisors, whose sum is σ = 72960271776000. Its totient is φ = 7707484800000.

The previous prime is 25615622651623. The next prime is 25615622651699.

It is a happy number.

25615622651652 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 5 + 622 + 6 + 5 + 1 + 6 + 5 + 2 = 666.

25615622651652 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 531188902 + ... + 531237122.

It is an arithmetic number, because the mean of its divisors is an integer number (380001415500).

Almost surely, 2^{25615622651652} is an apocalyptic number.

25615622651652 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 25615622651652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36480135888000).

25615622651652 is an abundant number, since it is smaller than the sum of its proper divisors (47344649124348).

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

25615622651652 is a wasteful number, since it uses less digits than its factorization.

25615622651652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51395 (or 51387 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 54.

The spelling of 25615622651652 in words is "twenty-five trillion, six hundred fifteen billion, six hundred twenty-two million, six hundred fifty-one thousand, six hundred fifty-two".