1245415225 has 18 divisors (see below), whose sum is σ = 1552539210. Its totient is φ = 991048320.

The previous prime is 1245415219. The next prime is 1245415231. The reversal of 1245415225 is 5225145421.

It is an interprime number because it is at equal distance from previous prime (1245415219) and next prime (1245415231).

It can be written as a sum of positive squares in 9 ways, for example, as 2782224 + 1242633001 = 1668^2 + 35251^2 .

It is not a de Polignac number, because 1245415225 - 2²⁷ = 1111197497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3044821 + ... + 3045229.

Almost surely, 2^1245415225 is an apocalyptic number.

It is an amenable number.

1245415225 is a deficient number, since it is larger than the sum of its proper divisors (307123985).

1245415225 is an frugal number, since it uses more digits than its factorization.

1245415225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 763 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 1245415225 is about 35290.4409861934. The cubic root of 1245415225 is about 1075.8987184304.

The spelling of 1245415225 in words is "one billion, two hundred forty-five million, four hundred fifteen thousand, two hundred twenty-five".