1516289725 has 6 divisors (see below), whose sum is σ = 1880199290. Its totient is φ = 1213031760.

The previous prime is 1516289683. The next prime is 1516289759. The reversal of 1516289725 is 5279826151.

It can be written as a sum of positive squares in 3 ways, for example, as 14417209 + 1501872516 = 3797^2 + 38754^2 .

It is not a de Polignac number, because 1516289725 - 2⁹ = 1516289213 is a prime.

It is a super-3 number, since 3×1516289725³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30325770 + ... + 30325819.

Almost surely, 2^1516289725 is an apocalyptic number.

It is an amenable number.

1516289725 is a deficient number, since it is larger than the sum of its proper divisors (363909565).

1516289725 is an equidigital number, since it uses as much as digits as its factorization.

1516289725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60651599 (or 60651594 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 1516289725 is about 38939.5650335234. The cubic root of 1516289725 is about 1148.8431277199.

The spelling of 1516289725 in words is "one billion, five hundred sixteen million, two hundred eighty-nine thousand, seven hundred twenty-five".