25451264514 has 64 divisors (see below), whose sum is σ = 58280995584. Its totient is φ = 7349312256.

The previous prime is 25451264483. The next prime is 25451264521. The reversal of 25451264514 is 41546215452.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38757 + ... + 228920.

It is an arithmetic number, because the mean of its divisors is an integer number (910640556).

Almost surely, 2^25451264514 is an apocalyptic number.

25451264514 is an abundant number, since it is smaller than the sum of its proper divisors (32829731070).

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

25451264514 is a wasteful number, since it uses less digits than its factorization.

25451264514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267771.

The product of its digits is 192000, while the sum is 39.

Adding to 25451264514 its reverse (41546215452), we get a palindrome (66997479966).

The spelling of 25451264514 in words is "twenty-five billion, four hundred fifty-one million, two hundred sixty-four thousand, five hundred fourteen".