557125305 has 32 divisors (see below), whose sum is σ = 973848960. Its totient is φ = 269729280.

The previous prime is 557125291. The next prime is 557125313. The reversal of 557125305 is 503521755.

It is not a de Polignac number, because 557125305 - 2¹² = 557121209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134749 + ... + 138821.

It is an arithmetic number, because the mean of its divisors is an integer number (30432780).

Almost surely, 2^557125305 is an apocalyptic number.

557125305 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

557125305 is a deficient number, since it is larger than the sum of its proper divisors (416723655).

557125305 is a wasteful number, since it uses less digits than its factorization.

557125305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 557125305 is about 23603.5019647509. The cubic root of 557125305 is about 822.8442303497.

It can be divided in two parts, 5571 and 25305, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 557125305 in words is "five hundred fifty-seven million, one hundred twenty-five thousand, three hundred five".