1204640625 has 56 divisors (see below), whose sum is σ = 2074973440. Its totient is φ = 621000000.

The previous prime is 1204640533. The next prime is 1204640653. The reversal of 1204640625 is 5260464021.

It is not a de Polignac number, because 1204640625 - 2¹⁵ = 1204607857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1204640592 and 1204640601.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1452711 + ... + 1453539.

Almost surely, 2^1204640625 is an apocalyptic number.

1204640625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1204640625 is a deficient number, since it is larger than the sum of its proper divisors (870332815).

1204640625 is an frugal number, since it uses more digits than its factorization.

1204640625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1204640625 is about 34707.9331709625. The cubic root of 1204640625 is about 1064.0266404777.

The spelling of 1204640625 in words is "one billion, two hundred four million, six hundred forty thousand, six hundred twenty-five".