1553191325 has 12 divisors (see below), whose sum is σ = 2201094240. Its totient is φ = 1065045360.

The previous prime is 1553191319. The next prime is 1553191337. The reversal of 1553191325 is 5231913551.

It is not a de Polignac number, because 1553191325 - 2¹⁶ = 1553125789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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, 4437515 + ... + 4437864.

It is an arithmetic number, because the mean of its divisors is an integer number (183424520).

Almost surely, 2^1553191325 is an apocalyptic number.

It is an amenable number.

1553191325 is a deficient number, since it is larger than the sum of its proper divisors (647902915).

1553191325 is an equidigital number, since it uses as much as digits as its factorization.

1553191325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875396 (or 8875391 counting only the distinct ones).

The product of its digits is 20250, while the sum is 35.

The square root of 1553191325 is about 39410.5483976054. The cubic root of 1553191325 is about 1158.0882414812.

The spelling of 1553191325 in words is "one billion, five hundred fifty-three million, one hundred ninety-one thousand, three hundred twenty-five".