20150725 has 24 divisors (see below), whose sum is σ = 28837440. Its totient is φ = 13681920.

The previous prime is 20150699. The next prime is 20150743. The reversal of 20150725 is 52705102.

It is not a de Polignac number, because 20150725 - 2⁵ = 20150693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20150696 and 20150705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19266 + ... + 20284.

It is an arithmetic number, because the mean of its divisors is an integer number (1201560).

Almost surely, 2^20150725 is an apocalyptic number.

20150725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20150725 is a deficient number, since it is larger than the sum of its proper divisors (8686715).

20150725 is a wasteful number, since it uses less digits than its factorization.

20150725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 20150725 is about 4488.9558919642. The cubic root of 20150725 is about 272.1219401706.

Adding to 20150725 its reverse (52705102), we get a palindrome (72855827).

The spelling of 20150725 in words is "twenty million, one hundred fifty thousand, seven hundred twenty-five".