925747421 has 2 divisors, whose sum is σ = 925747422. Its totient is φ = 925747420.

The previous prime is 925747409. The next prime is 925747423. The reversal of 925747421 is 124747529.

925747421 = 21514² + 21515².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462895225 + 462852196 = 21515^2 + 21514^2 .

It is a cyclic number.

It is not a de Polignac number, because 925747421 - 2⁶ = 925747357 is a prime.

Together with 925747423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (925747423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462873710 + 462873711.

It is an arithmetic number, because the mean of its divisors is an integer number (462873711).

Almost surely, 2^925747421 is an apocalyptic number.

925747421 is the 21515-th centered square number.

It is an amenable number.

925747421 is a deficient number, since it is larger than the sum of its proper divisors (1).

925747421 is an equidigital number, since it uses as much as digits as its factorization.

925747421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 925747421 is about 30426.0976958926. The cubic root of 925747421 is about 974.6099411905.

The spelling of 925747421 in words is "nine hundred twenty-five million, seven hundred forty-seven thousand, four hundred twenty-one".