1625926361 has 2 divisors, whose sum is σ = 1625926362. Its totient is φ = 1625926360.

The previous prime is 1625926343. The next prime is 1625926403. The reversal of 1625926361 is 1636295261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 920758336 + 705168025 = 30344^2 + 26555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625926361 - 2²⁶ = 1558817497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625926061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812963180 + 812963181.

It is an arithmetic number, because the mean of its divisors is an integer number (812963181).

Almost surely, 2^1625926361 is an apocalyptic number.

It is an amenable number.

1625926361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625926361 is an equidigital number, since it uses as much as digits as its factorization.

1625926361 is an evil number, because the sum of its binary digits is even.

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

The square root of 1625926361 is about 40322.7771985016. Note that the first 3 decimals coincide. The cubic root of 1625926361 is about 1175.8907049864.

The spelling of 1625926361 in words is "one billion, six hundred twenty-five million, nine hundred twenty-six thousand, three hundred sixty-one".