1252605740 has 12 divisors (see below), whose sum is σ = 2630472096. Its totient is φ = 501042288.

The previous prime is 1252605709. The next prime is 1252605811. The reversal of 1252605740 is 475062521.

It is a super-2 number, since 2×1252605740² = 3138042279761895200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1252605697 and 1252605706.

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, 31315124 + ... + 31315163.

It is an arithmetic number, because the mean of its divisors is an integer number (219206008).

Almost surely, 2^1252605740 is an apocalyptic number.

1252605740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252605740 is an abundant number, since it is smaller than the sum of its proper divisors (1377866356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252605740 is a wasteful number, since it uses less digits than its factorization.

1252605740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62630296 (or 62630294 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1252605740 is about 35392.1706031150. The cubic root of 1252605740 is about 1077.9653450514.

The spelling of 1252605740 in words is "one billion, two hundred fifty-two million, six hundred five thousand, seven hundred forty".