25275439651 has 36 divisors (see below), whose sum is σ = 32350370976. Its totient is φ = 19675397280.

The previous prime is 25275439633. The next prime is 25275439687. The reversal of 25275439651 is 15693457252.

It is not a de Polignac number, because 25275439651 - 2⁵ = 25275439619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 25275439595 and 25275439604.

It is not an unprimeable number, because it can be changed into a prime (25275439621) 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, 9384261 + ... + 9386953.

It is an arithmetic number, because the mean of its divisors is an integer number (898621416).

Almost surely, 2^25275439651 is an apocalyptic number.

25275439651 is a deficient number, since it is larger than the sum of its proper divisors (7074931325).

25275439651 is a wasteful number, since it uses less digits than its factorization.

25275439651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312 (or 4294 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The spelling of 25275439651 in words is "twenty-five billion, two hundred seventy-five million, four hundred thirty-nine thousand, six hundred fifty-one".