125904554 has 4 divisors (see below), whose sum is σ = 188856834. Its totient is φ = 62952276.

The previous prime is 125904529. The next prime is 125904577. The reversal of 125904554 is 455409521.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 110733529 + 15171025 = 10523^2 + 3895^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31476137 + ... + 31476140.

Almost surely, 2^125904554 is an apocalyptic number.

125904554 is a deficient number, since it is larger than the sum of its proper divisors (62952280).

125904554 is an equidigital number, since it uses as much as digits as its factorization.

125904554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62952279.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 125904554 is about 11220.7198521307. The cubic root of 125904554 is about 501.2031744203.

The spelling of 125904554 in words is "one hundred twenty-five million, nine hundred four thousand, five hundred fifty-four".