1253398025 has 24 divisors (see below), whose sum is σ = 1703620128. Its totient is φ = 907200000.

The previous prime is 1253398019. The next prime is 1253398033. The reversal of 1253398025 is 5208933521.

It is not a de Polignac number, because 1253398025 - 2⁶ = 1253397961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253398025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47225 + ... + 68825.

It is an arithmetic number, because the mean of its divisors is an integer number (70984172).

Almost surely, 2^1253398025 is an apocalyptic number.

It is an amenable number.

1253398025 is a deficient number, since it is larger than the sum of its proper divisors (450222103).

1253398025 is a wasteful number, since it uses less digits than its factorization.

1253398025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21833 (or 21828 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1253398025 is about 35403.3617754021. The cubic root of 1253398025 is about 1078.1925715823.

The spelling of 1253398025 in words is "one billion, two hundred fifty-three million, three hundred ninety-eight thousand, twenty-five".