25551006 has 32 divisors (see below), whose sum is σ = 56813568. Its totient is φ = 7607520.

The previous prime is 25550981. The next prime is 25551011. The reversal of 25551006 is 60015552.

It is a super-2 number, since 2×25551006² = 1305707815224072, which contains 22 as substring.

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, 2866 + ... + 7701.

It is an arithmetic number, because the mean of its divisors is an integer number (1775424).

Almost surely, 2^25551006 is an apocalyptic number.

25551006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25551006 is an abundant number, since it is smaller than the sum of its proper divisors (31262562).

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

25551006 is a wasteful number, since it uses less digits than its factorization.

25551006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 25551006 is about 5054.8002927910. The cubic root of 25551006 is about 294.5343837375.

Adding to 25551006 its reverse (60015552), we get a palindrome (85566558).

The spelling of 25551006 in words is "twenty-five million, five hundred fifty-one thousand, six".