1523223925 has 12 divisors (see below), whose sum is σ = 1907501796. Its totient is φ = 1206512000.

The previous prime is 1523223917. The next prime is 1523223929. The reversal of 1523223925 is 5293223251.

It can be written as a sum of positive squares in 6 ways, for example, as 32182929 + 1491040996 = 5673^2 + 38614^2 .

It is not a de Polignac number, because 1523223925 - 2³ = 1523223917 is a prime.

It is a super-2 number, since 2×1523223925² = 4640422251384811250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523223929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299104 + ... + 304153.

It is an arithmetic number, because the mean of its divisors is an integer number (158958483).

Almost surely, 2^1523223925 is an apocalyptic number.

It is an amenable number.

1523223925 is a deficient number, since it is larger than the sum of its proper divisors (384277871).

1523223925 is a wasteful number, since it uses less digits than its factorization.

1523223925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603368 (or 603363 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 1523223925 is about 39028.5014444572. The cubic root of 1523223925 is about 1150.5917370550.

The spelling of 1523223925 in words is "one billion, five hundred twenty-three million, two hundred twenty-three thousand, nine hundred twenty-five".