1252537798 has 64 divisors (see below), whose sum is σ = 2177936640. Its totient is φ = 536481792.

The previous prime is 1252537787. The next prime is 1252537799. The reversal of 1252537798 is 8977352521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252537799) 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, 1860790 + ... + 1861462.

It is an arithmetic number, because the mean of its divisors is an integer number (34030260).

Almost surely, 2^1252537798 is an apocalyptic number.

1252537798 is a deficient number, since it is larger than the sum of its proper divisors (925398842).

1252537798 is a wasteful number, since it uses less digits than its factorization.

1252537798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its digits is 1058400, while the sum is 49.

The square root of 1252537798 is about 35391.2107450423. The cubic root of 1252537798 is about 1077.9458548949.

The spelling of 1252537798 in words is "one billion, two hundred fifty-two million, five hundred thirty-seven thousand, seven hundred ninety-eight".