1225510 has 32 divisors (see below), whose sum is σ = 2594592. Its totient is φ = 410880.

The previous prime is 1225507. The next prime is 1225517. The reversal of 1225510 is 155221.

1225510 = 23² + 24² + ... + 154².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (81081).

2^1225510 is an apocalyptic number.

1225510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225510 is an abundant number, since it is smaller than the sum of its proper divisors (1369082).

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

1225510 is a wasteful number, since it uses less digits than its factorization.

1225510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1225510 is about 1107.0275515993. The cubic root of 1225510 is about 107.0135948022.

It can be divided in two parts, 122 and 5510, that multiplied together give a triangular number (672220 = T₁₁₅₉).

The spelling of 1225510 in words is "one million, two hundred twenty-five thousand, five hundred ten".