1525145672 has 16 divisors (see below), whose sum is σ = 2926152240. Its totient is φ = 744838416.

The previous prime is 1525145659. The next prime is 1525145681. The reversal of 1525145672 is 2765415251.

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, 2216438 + ... + 2217125.

It is an arithmetic number, because the mean of its divisors is an integer number (182884515).

Almost surely, 2^1525145672 is an apocalyptic number.

It is an amenable number.

1525145672 is a deficient number, since it is larger than the sum of its proper divisors (1401006568).

1525145672 is a wasteful number, since it uses less digits than its factorization.

1525145672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433612 (or 4433608 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

The square root of 1525145672 is about 39053.1134738320. The cubic root of 1525145672 is about 1151.0754078951.

The spelling of 1525145672 in words is "one billion, five hundred twenty-five million, one hundred forty-five thousand, six hundred seventy-two".