9142639025 has 24 divisors (see below), whose sum is σ = 12236326200. Its totient is φ = 6736343040.

The previous prime is 9142638971. The next prime is 9142639039. The reversal of 9142639025 is 5209362419.

It can be written as a sum of positive squares in 12 ways, for example, as 4657926001 + 4484713024 = 68249^2 + 66968^2 .

It is not a de Polignac number, because 9142639025 - 2⁶ = 9142638961 is a prime.

It is a Curzon number.

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, 114599 + ... + 177251.

It is an arithmetic number, because the mean of its divisors is an integer number (509846925).

Almost surely, 2^9142639025 is an apocalyptic number.

It is an amenable number.

9142639025 is a deficient number, since it is larger than the sum of its proper divisors (3093687175).

9142639025 is a wasteful number, since it uses less digits than its factorization.

9142639025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63125 (or 63120 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 9142639025 is about 95617.1481743730. The cubic root of 9142639025 is about 2091.0152058349.

The spelling of 9142639025 in words is "nine billion, one hundred forty-two million, six hundred thirty-nine thousand, twenty-five".