25498764953 has 8 divisors (see below), whose sum is σ = 26674417800. Its totient is φ = 24342871168.

The previous prime is 25498764937. The next prime is 25498764961. The reversal of 25498764953 is 35946789452.

It can be written as a sum of positive squares in 4 ways, for example, as 4510868569 + 20987896384 = 67163^2 + 144872^2 .

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 25498764953 - 2⁴ = 25498764937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25498764923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4937126 + ... + 4942287.

It is an arithmetic number, because the mean of its divisors is an integer number (3334302225).

Almost surely, 2^25498764953 is an apocalyptic number.

It is an amenable number.

25498764953 is a deficient number, since it is larger than the sum of its proper divisors (1175652847).

25498764953 is an equidigital number, since it uses as much as digits as its factorization.

25498764953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9879531.

The product of its digits is 65318400, while the sum is 62.

The spelling of 25498764953 in words is "twenty-five billion, four hundred ninety-eight million, seven hundred sixty-four thousand, nine hundred fifty-three".