125137505 has 16 divisors (see below), whose sum is σ = 153451584. Its totient is φ = 97930560.

The previous prime is 125137499. The next prime is 125137511. The reversal of 125137505 is 505731521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125137499) and next prime (125137511).

It is not a de Polignac number, because 125137505 - 2⁴ = 125137489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150902 + ... + 151728.

It is an arithmetic number, because the mean of its divisors is an integer number (9590724).

Almost surely, 2^125137505 is an apocalyptic number.

It is an amenable number.

125137505 is a deficient number, since it is larger than the sum of its proper divisors (28314079).

125137505 is an equidigital number, since it uses as much as digits as its factorization.

125137505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 125137505 is about 11186.4876078240. The cubic root of 125137505 is about 500.1832728139.

The spelling of 125137505 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, five hundred five".