15225408 has 168 divisors, whose sum is σ = 49926240. Its totient is φ = 4561920.

The previous prime is 15225407. The next prime is 15225439. The reversal of 15225408 is 80452251.

It is a happy number.

It is a super-3 number, since 3×15225408³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (15225401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171028 + ... + 171116.

It is an arithmetic number, because the mean of its divisors is an integer number (297180).

Almost surely, 2^15225408 is an apocalyptic number.

15225408 is a gapful number since it is divisible by the number (18) 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 15225408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24963120).

15225408 is an abundant number, since it is smaller than the sum of its proper divisors (34700832).

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

15225408 is an equidigital number, since it uses as much as digits as its factorization.

15225408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 15225408 is about 3901.9748845937. The cubic root of 15225408 is about 247.8504127392.

Adding to 15225408 its reverse (80452251), we get a palindrome (95677659).

The spelling of 15225408 in words is "fifteen million, two hundred twenty-five thousand, four hundred eight".