125550431 has 4 divisors (see below), whose sum is σ = 126961200. Its totient is φ = 124139664.

The previous prime is 125550427. The next prime is 125550463. The reversal of 125550431 is 134055521.

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

It is a cyclic number.

It is not a de Polignac number, because 125550431 - 2² = 125550427 is a prime.

It is a super-2 number, since 2×125550431² = 31525821448571522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125550431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550401) 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, 705251 + ... + 705428.

It is an arithmetic number, because the mean of its divisors is an integer number (31740300).

Almost surely, 2^125550431 is an apocalyptic number.

125550431 is a deficient number, since it is larger than the sum of its proper divisors (1410769).

125550431 is an equidigital number, since it uses as much as digits as its factorization.

125550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410768.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 125550431 is about 11204.9288708140. The cubic root of 125550431 is about 500.7328333857.

The spelling of 125550431 in words is "one hundred twenty-five million, five hundred fifty thousand, four hundred thirty-one".