25251947455 has 16 divisors (see below), whose sum is σ = 34666735680. Its totient is φ = 17297874432.

The previous prime is 25251947447. The next prime is 25251947471. The reversal of 25251947455 is 55474915252.

It is a cyclic number.

It is not a de Polignac number, because 25251947455 - 2³ = 25251947447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25251947399 and 25251947408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335040 + ... + 403429.

It is an arithmetic number, because the mean of its divisors is an integer number (2166670980).

Almost surely, 2^25251947455 is an apocalyptic number.

25251947455 is a deficient number, since it is larger than the sum of its proper divisors (9414788225).

25251947455 is an equidigital number, since it uses as much as digits as its factorization.

25251947455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739458.

The product of its digits is 2520000, while the sum is 49.

The spelling of 25251947455 in words is "twenty-five billion, two hundred fifty-one million, nine hundred forty-seven thousand, four hundred fifty-five".