25615263451 has 16 divisors (see below), whose sum is σ = 28005550848. Its totient is φ = 23323622400.

The previous prime is 25615263419. The next prime is 25615263473. The reversal of 25615263451 is 15436251652.

It is a cyclic number.

It is not a de Polignac number, because 25615263451 - 2⁵ = 25615263419 is a prime.

It is a super-2 number, since 2×25615263451² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25615263481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2520841 + ... + 2530981.

It is an arithmetic number, because the mean of its divisors is an integer number (1750346928).

Almost surely, 2^25615263451 is an apocalyptic number.

25615263451 is a deficient number, since it is larger than the sum of its proper divisors (2390287397).

25615263451 is a wasteful number, since it uses less digits than its factorization.

25615263451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14982.

The product of its digits is 216000, while the sum is 40.

The spelling of 25615263451 in words is "twenty-five billion, six hundred fifteen million, two hundred sixty-three thousand, four hundred fifty-one".