555220025 has 6 divisors (see below), whose sum is σ = 688472862. Its totient is φ = 444176000.

The previous prime is 555220019. The next prime is 555220049. The reversal of 555220025 is 520022555.

It can be written as a sum of positive squares in 3 ways, for example, as 1841449 + 553378576 = 1357^2 + 23524^2 .

It is not a de Polignac number, because 555220025 - 2⁶ = 555219961 is a prime.

It is a super-2 number, since 2×555220025² = 616538552322001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555219976 and 555220003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11104376 + ... + 11104425.

It is an arithmetic number, because the mean of its divisors is an integer number (114745477).

Almost surely, 2^555220025 is an apocalyptic number.

It is an amenable number.

555220025 is a deficient number, since it is larger than the sum of its proper divisors (133252837).

555220025 is a wasteful number, since it uses less digits than its factorization.

555220025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208811 (or 22208806 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 555220025 is about 23563.1072866038. The cubic root of 555220025 is about 821.9051602131.

The spelling of 555220025 in words is "five hundred fifty-five million, two hundred twenty thousand, twenty-five".