153983925 has 18 divisors (see below), whose sum is σ = 275802722. Its totient is φ = 82124640.

The previous prime is 153983839. The next prime is 153983927. The reversal of 153983925 is 529389351.

It can be written as a sum of positive squares in 3 ways, for example, as 25796241 + 128187684 = 5079^2 + 11322^2 .

It is not a de Polignac number, because 153983925 - 2¹⁸ = 153721781 is a prime.

It is a super-2 number, since 2×153983925² = 47422098316811250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153983927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 341962 + ... + 342411.

Almost surely, 2^153983925 is an apocalyptic number.

153983925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153983925 is a deficient number, since it is larger than the sum of its proper divisors (121818797).

153983925 is a wasteful number, since it uses less digits than its factorization.

153983925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684389 (or 684381 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 153983925 is about 12409.0259488809. The cubic root of 153983925 is about 535.9921902868.

The spelling of 153983925 in words is "one hundred fifty-three million, nine hundred eighty-three thousand, nine hundred twenty-five".