13925531 has 2 divisors, whose sum is σ = 13925532. Its totient is φ = 13925530.

The previous prime is 13925467. The next prime is 13925551. The reversal of 13925531 is 13552931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13925531 - 2⁶ = 13925467 is a prime.

It is a super-2 number, since 2×13925531² = 387840827263922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13925494 and 13925503.

It is not a weakly prime, because it can be changed into another prime (13925551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6962765 + 6962766.

It is an arithmetic number, because the mean of its divisors is an integer number (6962766).

Almost surely, 2^13925531 is an apocalyptic number.

13925531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13925531 is an equidigital number, since it uses as much as digits as its factorization.

13925531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 29.

The square root of 13925531 is about 3731.6927794233. The cubic root of 13925531 is about 240.5861310355.

The spelling of 13925531 in words is "thirteen million, nine hundred twenty-five thousand, five hundred thirty-one".