1355402025 has 24 divisors (see below), whose sum is σ = 2489924960. Its totient is φ = 722880720.

The previous prime is 1355401981. The next prime is 1355402051. The reversal of 1355402025 is 5202045531.

It is a happy number.

It is not a de Polignac number, because 1355402025 - 2¹¹ = 1355399977 is a prime.

It is a super-2 number, since 2×1355402025² = 3674229298748201250, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1355402025.

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, 1003327 + ... + 1004676.

Almost surely, 2^1355402025 is an apocalyptic number.

1355402025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355402025 is a deficient number, since it is larger than the sum of its proper divisors (1134522935).

1355402025 is a wasteful number, since it uses less digits than its factorization.

1355402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008022 (or 2008011 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1355402025 is about 36815.7849977425. The cubic root of 1355402025 is about 1106.6816528652.

Adding to 1355402025 its reverse (5202045531), we get a palindrome (6557447556).

The spelling of 1355402025 in words is "one billion, three hundred fifty-five million, four hundred two thousand, twenty-five".