25125126398 has 32 divisors (see below), whose sum is σ = 38975219712. Its totient is φ = 12142447200.

The previous prime is 25125126391. The next prime is 25125126413. The reversal of 25125126398 is 89362152152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125126391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1638515 + ... + 1653777.

It is an arithmetic number, because the mean of its divisors is an integer number (1217975616).

Almost surely, 2^25125126398 is an apocalyptic number.

25125126398 is a deficient number, since it is larger than the sum of its proper divisors (13850093314).

25125126398 is a wasteful number, since it uses less digits than its factorization.

25125126398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560.

The product of its digits is 259200, while the sum is 44.

The spelling of 25125126398 in words is "twenty-five billion, one hundred twenty-five million, one hundred twenty-six thousand, three hundred ninety-eight".