1252945895 has 16 divisors (see below), whose sum is σ = 1529982048. Its totient is φ = 984804480.

The previous prime is 1252945891. The next prime is 1252945919. The reversal of 1252945895 is 5985492521.

It is a happy number.

It is not a de Polignac number, because 1252945895 - 2² = 1252945891 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 (1252945891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128285 + ... + 137705.

It is an arithmetic number, because the mean of its divisors is an integer number (95623878).

Almost surely, 2^1252945895 is an apocalyptic number.

1252945895 is a deficient number, since it is larger than the sum of its proper divisors (277036153).

1252945895 is an equidigital number, since it uses as much as digits as its factorization.

1252945895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9890.

The product of its digits is 1296000, while the sum is 50.

The square root of 1252945895 is about 35396.9757889004. The cubic root of 1252945895 is about 1078.0629128931.

The spelling of 1252945895 in words is "one billion, two hundred fifty-two million, nine hundred forty-five thousand, eight hundred ninety-five".