1555023325 has 12 divisors (see below), whose sum is σ = 1934438688. Its totient is φ = 1240012400.

The previous prime is 1555023241. The next prime is 1555023329. The reversal of 1555023325 is 5233205551.

It is not a de Polignac number, because 1555023325 - 2⁹ = 1555022813 is a prime.

It is a Duffinian number.

1555023325 is a modest number, since divided by 23325 gives 15550 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555023329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92227 + ... + 107776.

It is an arithmetic number, because the mean of its divisors is an integer number (161203224).

Almost surely, 2^1555023325 is an apocalyptic number.

It is an amenable number.

1555023325 is a deficient number, since it is larger than the sum of its proper divisors (379415363).

1555023325 is a wasteful number, since it uses less digits than its factorization.

1555023325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200324 (or 200319 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 1555023325 is about 39433.7840563139. The cubic root of 1555023325 is about 1158.5433869648.

Adding to 1555023325 its reverse (5233205551), we get a palindrome (6788228876).

The spelling of 1555023325 in words is "one billion, five hundred fifty-five million, twenty-three thousand, three hundred twenty-five".