25314512454 has 48 divisors (see below), whose sum is σ = 68382063360. Its totient is φ = 6575197680.

The previous prime is 25314512449. The next prime is 25314512501. The reversal of 25314512454 is 45421541352.

25314512454 is a `hidden beast` number, since 2 + 53 + 145 + 12 + 454 = 666.

It is a super-2 number, since 2×25314512454² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9130834 + ... + 9133605.

It is an arithmetic number, because the mean of its divisors is an integer number (1424626320).

Almost surely, 2^25314512454 is an apocalyptic number.

25314512454 is an abundant number, since it is smaller than the sum of its proper divisors (43067550906).

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

25314512454 is a wasteful number, since it uses less digits than its factorization.

25314512454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18264465 (or 18264462 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 25314512454 in words is "twenty-five billion, three hundred fourteen million, five hundred twelve thousand, four hundred fifty-four".