10625692561 has 9 divisors (see below), whose sum is σ = 11680726729. Its totient is φ = 9658689700.

The previous prime is 10625692537. The next prime is 10625692591. The reversal of 10625692561 is 16529652601.

The square root of 10625692561 is 103081.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 10625692561 - 2⁷ = 10625692433 is a prime.

It is a super-2 number, since 2×10625692561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10625692531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1129206 + ... + 1138576.

Almost surely, 2^10625692561 is an apocalyptic number.

10625692561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10625692561 is the 103081-st square number.

10625692561 is the 51541-st centered octagonal number.

It is an amenable number.

10625692561 is a deficient number, since it is larger than the sum of its proper divisors (1055034168).

10625692561 is an frugal number, since it uses more digits than its factorization.

10625692561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18764 (or 9382 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 10625692561 in words is "ten billion, six hundred twenty-five million, six hundred ninety-two thousand, five hundred sixty-one".