25231252715 has 8 divisors (see below), whose sum is σ = 30288422880. Its totient is φ = 20177722432.

The previous prime is 25231252693. The next prime is 25231252721. The reversal of 25231252715 is 51725213252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25231252715 - 2¹⁸ = 25230990571 is a prime.

It is a super-2 number, since 2×25231252715² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894695 + ... + 922464.

It is an arithmetic number, because the mean of its divisors is an integer number (3786052860).

Almost surely, 2^25231252715 is an apocalyptic number.

25231252715 is a deficient number, since it is larger than the sum of its proper divisors (5057170165).

25231252715 is a wasteful number, since it uses less digits than its factorization.

25231252715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819941.

The product of its digits is 42000, while the sum is 35.

Adding to 25231252715 its reverse (51725213252), we get a palindrome (76956465967).

The spelling of 25231252715 in words is "twenty-five billion, two hundred thirty-one million, two hundred fifty-two thousand, seven hundred fifteen".