125557473 has 4 divisors (see below), whose sum is σ = 167409968. Its totient is φ = 83704980.

The previous prime is 125557451. The next prime is 125557507. The reversal of 125557473 is 374755521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125557473 - 2⁵ = 125557441 is a prime.

It is a super-2 number, since 2×125557473² = 31529358052291458, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125557403) 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, 20926243 + ... + 20926248.

It is an arithmetic number, because the mean of its divisors is an integer number (41852492).

Almost surely, 2^125557473 is an apocalyptic number.

It is an amenable number.

125557473 is a deficient number, since it is larger than the sum of its proper divisors (41852495).

125557473 is an equidigital number, since it uses as much as digits as its factorization.

125557473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41852494.

The product of its digits is 147000, while the sum is 39.

The square root of 125557473 is about 11205.2431031192. The cubic root of 125557473 is about 500.7421950811.

The spelling of 125557473 in words is "one hundred twenty-five million, five hundred fifty-seven thousand, four hundred seventy-three".