125812465 has 4 divisors (see below), whose sum is σ = 150974964. Its totient is φ = 100649968.

The previous prime is 125812459. The next prime is 125812493. The reversal of 125812465 is 564218521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564218521 = 5023 ⋅112327.

It can be written as a sum of positive squares in 2 ways, for example, as 18627856 + 107184609 = 4316^2 + 10353^2 .

It is a cyclic number.

It is not a de Polignac number, because 125812465 - 2⁹ = 125811953 is a prime.

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 125812465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12581242 + ... + 12581251.

It is an arithmetic number, because the mean of its divisors is an integer number (37743741).

Almost surely, 2^125812465 is an apocalyptic number.

It is an amenable number.

125812465 is a deficient number, since it is larger than the sum of its proper divisors (25162499).

125812465 is an equidigital number, since it uses as much as digits as its factorization.

125812465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25162498.

The product of its digits is 19200, while the sum is 34.

The square root of 125812465 is about 11216.6155769020. The cubic root of 125812465 is about 501.0809480851.

The spelling of 125812465 in words is "one hundred twenty-five million, eight hundred twelve thousand, four hundred sixty-five".