25130109553 has 4 divisors (see below), whose sum is σ = 25130552308. Its totient is φ = 25129666800.

The previous prime is 25130109551. The next prime is 25130109581. The reversal of 25130109553 is 35590103152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16991904609 + 8138204944 = 130353^2 + 90212^2 .

It is a cyclic number.

It is not a de Polignac number, because 25130109553 - 2¹ = 25130109551 is a prime.

It is a super-2 number, since 2×25130109553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25130109551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121098 + ... + 254803.

It is an arithmetic number, because the mean of its divisors is an integer number (6282638077).

Almost surely, 2^25130109553 is an apocalyptic number.

It is an amenable number.

25130109553 is a deficient number, since it is larger than the sum of its proper divisors (442755).

25130109553 is an equidigital number, since it uses as much as digits as its factorization.

25130109553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442754.

The product of its (nonzero) digits is 20250, while the sum is 34.

The spelling of 25130109553 in words is "twenty-five billion, one hundred thirty million, one hundred nine thousand, five hundred fifty-three".