1252532645 has 32 divisors (see below), whose sum is σ = 1854316800. Its totient is φ = 790917120.

The previous prime is 1252532641. The next prime is 1252532651. The reversal of 1252532645 is 5462352521.

It is not a de Polignac number, because 1252532645 - 2² = 1252532641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252532641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201230 + ... + 207360.

It is an arithmetic number, because the mean of its divisors is an integer number (57947400).

Almost surely, 2^1252532645 is an apocalyptic number.

It is an amenable number.

1252532645 is a deficient number, since it is larger than the sum of its proper divisors (601784155).

1252532645 is a wasteful number, since it uses less digits than its factorization.

1252532645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605.

The product of its digits is 72000, while the sum is 35.

The square root of 1252532645 is about 35391.1379444064. The cubic root of 1252532645 is about 1077.9443766527.

The spelling of 1252532645 in words is "one billion, two hundred fifty-two million, five hundred thirty-two thousand, six hundred forty-five".