125251437 has 4 divisors (see below), whose sum is σ = 167001920. Its totient is φ = 83500956.

The previous prime is 125251421. The next prime is 125251447. The reversal of 125251437 is 734152521.

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 125251437 - 2⁴ = 125251421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125251417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20875237 + ... + 20875242.

It is an arithmetic number, because the mean of its divisors is an integer number (41750480).

Almost surely, 2^125251437 is an apocalyptic number.

It is an amenable number.

125251437 is a deficient number, since it is larger than the sum of its proper divisors (41750483).

125251437 is an equidigital number, since it uses as much as digits as its factorization.

125251437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41750482.

The product of its digits is 8400, while the sum is 30.

The square root of 125251437 is about 11191.5788430409. The cubic root of 125251437 is about 500.3350248000.

The spelling of 125251437 in words is "one hundred twenty-five million, two hundred fifty-one thousand, four hundred thirty-seven".