921473959025 has 24 divisors (see below), whose sum is σ = 1196141192064. Its totient is φ = 702860470400.

The previous prime is 921473958983. The next prime is 921473959057. The reversal of 921473959025 is 520959374129.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-921473959025 is a prime.

It is a super-2 number, since 2×921473959025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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, 2397644 + ... + 2755293.

It is an arithmetic number, because the mean of its divisors is an integer number (49839216336).

Almost surely, 2^921473959025 is an apocalyptic number.

It is an amenable number.

921473959025 is a deficient number, since it is larger than the sum of its proper divisors (274667233039).

921473959025 is a wasteful number, since it uses less digits than its factorization.

921473959025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153281 (or 5153276 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 921473959025 in words is "nine hundred twenty-one billion, four hundred seventy-three million, nine hundred fifty-nine thousand, twenty-five".