1872405525 has 12 divisors (see below), whose sum is σ = 3095710592. Its totient is φ = 998616240.

The previous prime is 1872405473. The next prime is 1872405541. The reversal of 1872405525 is 5255042781.

It is not a de Polignac number, because 1872405525 - 2¹⁸ = 1872143381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12482629 + ... + 12482778.

Almost surely, 2^1872405525 is an apocalyptic number.

1872405525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1872405525 is a deficient number, since it is larger than the sum of its proper divisors (1223305067).

1872405525 is a wasteful number, since it uses less digits than its factorization.

1872405525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24965420 (or 24965415 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The square root of 1872405525 is about 43271.3014017374. The cubic root of 1872405525 is about 1232.5370168009.

The spelling of 1872405525 in words is "one billion, eight hundred seventy-two million, four hundred five thousand, five hundred twenty-five".