25625000 has 64 divisors (see below), whose sum is σ = 61523280. Its totient is φ = 10000000.

The previous prime is 25624961. The next prime is 25625029. The reversal of 25625000 is 52652.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 25623844 + 1156 = 5062^2 + 34^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624980 + ... + 625020.

Almost surely, 2^25625000 is an apocalyptic number.

25625000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30761640).

25625000 is an abundant number, since it is smaller than the sum of its proper divisors (35898280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25625000 is an frugal number, since it uses more digits than its factorization.

25625000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25625000 is about 5062.1141828291. The cubic root of 25625000 is about 294.8184269985.

Adding to 25625000 its reverse (52652), we get a palindrome (25677652).

It can be divided in two parts, 25 and 625000, that multiplied together give a cube (15625000 = 250³).

The spelling of 25625000 in words is "twenty-five million, six hundred twenty-five thousand".